Triclinic form of Human C-Reactive Protein in complex with Zinc

Experimental Data Snapshot

  • Resolution: 1.98 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


A Staggered Decameric Assembly of Human C-Reactive Protein Stabilized by Zinc Ions Revealed by X-ray Crystallography.

Guillon, C.Bigouagou, U.M.Folio, C.Jeannin, P.Delneste, Y.Gouet, P.

(2014) Protein Pept Lett 22: 248-255

  • DOI: https://doi.org/10.2174/0929866522666141231111226
  • Primary Citation of Related Structures:  
    3PVN, 3PVO

  • PubMed Abstract: 

    Human C-reactive protein (CRP) is an acute phase protein, which harbours both host defence and scavenging properties. In this study, we obtained two new crystal forms of CRP, where CRP forms a symmetric, staggered dimer of pentamers. In one of these structures, obtained in the presence of HIV-1 Tat protein, this dimer of pentamers is stabilized by two zinc ions trapped within a cleft of the effector face of CRP. These two decameric interfaces involve complementary surfaces of CRP pentamers and bury a large area of ~2000 Å(2) per pentamer, suggesting a biological role of this interface. These two novel decameric interfaces and the involvement of zinc might have important consequences in the understanding of CRP biological functions.

  • Organizational Affiliation

    "Biocrystallography and Structural Biology of Therapeutic Targets", UMR 5086 CNRS Universite de Lyon, IBCP 7, passage du Vercors, 69367 Lyon cedex 7, France. christophe.guillon@ibcp.fr.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
C-reactive protein
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T
206Homo sapiensMutation(s): 0 
Gene Names: CRPPTX1
UniProt & NIH Common Fund Data Resources
Find proteins for P02741 (Homo sapiens)
Explore P02741 
Go to UniProtKB:  P02741
PHAROS:  P02741
GTEx:  ENSG00000132693 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02741
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ZN

Download Ideal Coordinates CCD File 
JA [auth G],
JB [auth S],
MB [auth T],
UA [auth L],
W [auth A]
Query on CA

Download Ideal Coordinates CCD File 
AA [auth C]
AB [auth O]
BA [auth D]
BB [auth P]
CA [auth D]
AA [auth C],
AB [auth O],
BA [auth D],
BB [auth P],
CA [auth D],
CB [auth P],
DA [auth E],
DB [auth Q],
EA [auth E],
EB [auth Q],
FA [auth F],
FB [auth R],
GA [auth F],
GB [auth R],
HA [auth G],
HB [auth S],
IA [auth G],
IB [auth S],
KA [auth H],
KB [auth T],
LA [auth H],
LB [auth T],
MA [auth I],
NA [auth I],
OA [auth J],
PA [auth J],
QA [auth K],
RA [auth K],
SA [auth L],
TA [auth L],
U [auth A],
V [auth A],
VA [auth M],
WA [auth M],
X [auth B],
XA [auth N],
Y [auth B],
YA [auth N],
Z [auth C],
ZA [auth O]
Experimental Data & Validation

Experimental Data

  • Resolution: 1.98 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.179 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.3α = 79.9
b = 96.4β = 77.1
c = 160.4γ = 69.4
Software Package:
Software NamePurpose
ADSCdata collection
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-01-11
    Type: Initial release
  • Version 1.1: 2015-03-18
    Changes: Database references
  • Version 1.2: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description